C Programming Language || Hands On Coding

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Hands-on C programming language challenges for beginners. Learn building logic by solving programs. Owner: @Pradeep_saii

India31 202 Technologies & Applications9 572...

📈 Analytical overview of Telegram channel C Programming Language || Hands On Coding

Channel C Programming Language || Hands On Coding (@c_programming_language_coding) in the English language segment is an active participant. Currently, the community unites 12 821 subscribers, ranking 9 572 in the Technologies & Applications category and 31 202 in the India region.

📊 Audience metrics and dynamics

Since its creation on невідомо, the project has demonstrated rapid growth, gathering an audience of 12 821 subscribers.

According to the latest data from 28 August, 2026, the channel demonstrates stable activity. Although there has been a change in the number of participants by -213 over the last 30 days and by -1 over the last 24 hours, overall reach remains high.

Verification status: Not verified
Engagement rate (ER): The average audience engagement rate is 6.87%. Within the first 24 hours after publication, content typically collects 2.42% reactions from the total number of subscribers.
Post reach: On average, each post receives 881 views. Within the first day, a publication typically gains 310 views.
Reactions and interaction: The audience actively supports content: the average number of reactions per post is 2.
Thematic interests: Content is focused on key topics such as input, string, scanf("%d, array, element.

📝 Description and content policy

The author describes the resource as a platform for expressing subjective opinions:
“Hands-on C programming language challenges for beginners. Learn building logic by solving programs. Owner: @Pradeep_saii”

Thanks to the high frequency of updates (latest data received on 29 August, 2026), the channel maintains relevance and a high level of publication reach. Analytics show that the audience actively interacts with content, making it an important point of influence in the Technologies & Applications category.

12 821

Subscribers

-124 hours

-297 days

-21330 days

881

Post views

~ 31024 hours

~ 40048 hours

6.87%

Engagement rate

No data

Posts per day

Ads index

beta

Posts Archive

12 818

Remove Vowels from a String

#include <stdio.h>
#include <string.h>
#include <stdbool.h>

bool isVowel(char c) {
    c = tolower(c);
    return (c == 'a' || c == 'e' || c == 'i' || c == 'o' || c == 'u');
}

int main() {
    char str[100];
    printf("Enter a string: ");
    fgets(str, sizeof(str), stdin);
    str[strcspn(str, "\n")] = 0;

    int j = 0;
    for (int i = 0; str[i] != '\0'; i++) {
        if (!isVowel(str[i])) {
            str[j++] = str[i];
        }
    }
    str[j] = '\0';

    printf("String after removing vowels: %s\n", str);
    return 0;
}

12 818

Remove Spaces from String

#include <stdio.h>
#include <string.h>

void removeSpaces(char *str) {
    int i, j = 0;
    for (i = 0; str[i] != '\0'; i++) {
        if (str[i] != ' ') {
            str[j++] = str[i];
        }
    }
    str[j] = '\0';
}

int main() {
    char str[] = " This is a string with spaces. ";
    removeSpaces(str);
    printf("%s", str);
    return 0;
}

12 818

Toggle Case of String Characters

#include <stdio.h>
#include <string.h>
#include <ctype.h>

int main() {
 char str[100];
 int i;

 printf("Enter a string: ");
 fgets(str, sizeof(str), stdin);
 str[strcspn(str, "\n")] = 0;

 for (i = 0; str[i] != '\0'; i++) {
 if (islower(str[i])) {
 str[i] = toupper(str[i]);
 } else if (isupper(str[i])) {
 str[i] = tolower(str[i]);
 }
 }

 printf("Toggled string: %s\n", str);
 return 0;
}

12 818

Count Vowels, Consonants, Digits, and Spaces in a String

#include <stdio.h>
#include <string.h>

int main() {
  char str[100];
  int vowels = 0, consonants = 0, digits = 0, spaces = 0;
  printf("Enter a string: ");
  fgets(str, sizeof(str), stdin);

  for (int i = 0; str[i] != '\0'; i++) {
    char ch = str[i];
    if ((ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z')) {
      ch = (ch >= 'A' && ch <= 'Z') ? (ch + 32) : ch;
      if (ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u') {
        vowels++;
      } else {
        consonants++;
      }
    } else if (ch >= '0' && ch <= '9') {
      digits++;
    } else if (ch == ' ') {
      spaces++;
    }
  }

  printf("Vowels: %d\n", vowels);
  printf("Consonants: %d\n", consonants);
  printf("Digits: %d\n", digits);
  printf("Spaces: %d\n", spaces);
  return 0;
}

12 818

String Case Conversion

#include <stdio.h>
#include <string.h>
#include <ctype.h>

int main() {
 char str[100];
 int i;

 printf("Enter a string: ");
 fgets(str, sizeof(str), stdin);
 str[strcspn(str, "\n")] = 0;

 for (i = 0; str[i] != '\0'; i++) {
 if (islower(str[i])) {
 str[i] = toupper(str[i]);
 } else if (isupper(str[i])) {
 str[i] = tolower(str[i]);
 }
 }

 printf("Modified string: %s\n", str);
 return 0;
}

12 818

Compare Two Strings (Without strcmp)

#include <stdio.h>

int main() {
 char str1[100], str2[100];
 int i = 0, flag = 0;

 scanf("%s", str1);
 scanf("%s", str2);

 while (str1[i] != '\0' || str2[i] != '\0') {
 if (str1[i] != str2[i]) {
 flag = 1;
 break;
 }
 i++;
 }

 if (flag == 0 && str1[i] == '\0' && str2[i] == '\0')
 printf("Strings are equal");
 else
 printf("Strings are not equal");

 return 0;
}

12 818

String Concatenation (Without strcat)

#include <stdio.h>
#include <string.h>

int main() {
 char str1[100] = "Hello, ";
 char str2[] = "World!";
 int i, j;

 for (i = 0; str1[i] != '\0'; i++);

 for (j = 0; str2[j] != '\0'; j++) {
 str1[i] = str2[j];
 i++;
 }
 str1[i] = '\0';

 printf("%s\n", str1);
 return 0;
}

12 818

Copying Strings

#include <stdio.h>

int main() {
 char source[] = "Hello!";
 char destination[10];
 int i = 0;

 while (source[i] != '\0') {
 destination[i] = source[i];
 i++;
 }
 destination[i] = '\0';

 printf("Copied string: %s\n", destination);
 return 0;
}

12 818

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12 818

String Length (No strlen)

#include <stdio.h>

int main() {
 char str[] = "Hello";
 int length = 0;
 while (str[length] != '\0') {
 length++;
 }
 printf("Length: %d\n", length);
 return 0;
}

12 818

Input and Print a String

#include <stdio.h>
#include <string.h>

int main() {
 char str[100];
 printf("Enter a string: ");
 fgets(str, sizeof(str), stdin);
 str[strcspn(str, "\n")] = 0;
 printf("You entered: %s\n", str);
 return 0;
}

12 818

Spiral Matrix Traversal

#include <stdio.h>

int main() {
    int rows, cols, i, j;
    scanf("%d %d", &rows, &cols);
    int matrix[rows][cols];
    for (i = 0; i < rows; i++) {
        for (j = 0; j < cols; j++) {
            scanf("%d", &matrix[i][j]);
        }
    }
    int top = 0, bottom = rows - 1, left = 0, right = cols - 1, dir = 0;
    while (top <= bottom && left <= right) {
        if (dir == 0) {
            for (i = left; i <= right; i++) {
                printf("%d ", matrix[top][i]);
            }
            top++;
        } else if (dir == 1) {
            for (i = top; i <= bottom; i++) {
                printf("%d ", matrix[i][right]);
            }
            right--;
        } else if (dir == 2) {
            for (i = right; i >= left; i--) {
                printf("%d ", matrix[bottom][i]);
            }
            bottom--;
        } else if (dir == 3) {
            for (i = bottom; i >= top; i--) {
                printf("%d ", matrix[i][left]);
            }
            left++;
        }
        dir = (dir + 1) % 4;
    }
    printf("\n");
    return 0;
}

12 818

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12 818

Print Boundary Elements of a Matrix

#include <stdio.h>

int main() {
    int rows, cols, i, j;
    printf("Enter the number of rows: ");
    scanf("%d", &rows);
    printf("Enter the number of columns: ");
    scanf("%d", &cols);

    int matrix[rows][cols];

    printf("Enter the elements of the matrix:\n");
    for (i = 0; i < rows; i++)
        for (j = 0; j < cols; j++)
            scanf("%d", &matrix[i][j]);

    printf("Boundary elements are:\n");
    for (i = 0; i < rows; i++) {
        for (j = 0; j < cols; j++) {
            if (i == 0 || i == rows - 1 || j == 0 || j == cols - 1)
                printf("%d ", matrix[i][j]);
            else
                printf("  ");
        }
        printf("\n");
    }

    return 0;
}

12 818

Print Lower Triangle of a Matrix

#include <stdio.h>

int main() {
  int matrix[3][3] = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}};
  int rows = 3;
  int cols = 3;

  for (int i = 0; i < rows; i++) {
    for (int j = 0; j < cols; j++) {
      if (j <= i) {
        printf("%d ", matrix[i][j]);
      } else {
        printf("  ");
      }
    }
    printf("\n");
  }

  return 0;
}

12 818

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12 818

Print Upper Triangle of a Matrix

#include <stdio.h>

int main() {
  int rows, cols, matrix[10][10], i, j;

  printf("Enter the number of rows: ");
  scanf("%d", &rows);
  printf("Enter the number of columns: ");
  scanf("%d", &cols);

  printf("Enter the elements of the matrix:\n");
  for (i = 0; i < rows; i++) {
    for (j = 0; j < cols; j++) {
      scanf("%d", &matrix[i][j]);
    }
  }

  printf("Upper triangle of the matrix:\n");
  for (i = 0; i < rows; i++) {
    for (j = 0; j < cols; j++) {
      if (j >= i) {
        printf("%d ", matrix[i][j]);
      } else {
        printf("  ");
      }
    }
    printf("\n");
  }

  return 0;
}

12 818

Diagonal Sum of a Square Matrix

#include <stdio.h>

int main() {
 int matrix[10][10];
 int rows, cols, i, j, sum = 0;

 printf("Enter the number of rows (and columns): ");
 scanf("%d", &rows);
 cols = rows;

 printf("Enter the elements of the matrix:\n");
 for (i = 0; i < rows; i++) {
 for (j = 0; j < cols; j++) {
 scanf("%d", &matrix[i][j]);
 }
 }

 for (i = 0; i < rows; i++) {
 sum += matrix[i][i];
 }

 printf("Diagonal sum: %d\n", sum);

 return 0;
}

12 818

Identity Matrix Checker

#include <stdio.h>
#include <stdbool.h>

bool isIdentityMatrix(int matrix[][100], int rows, int cols) {
    if (rows != cols) return false;
    for (int i = 0; i < rows; i++) {
        for (int j = 0; j < cols; j++) {
            if (i == j && matrix[i][j] != 1) return false;
            if (i != j && matrix[i][j] != 0) return false;
        }
    }
    return true;
}

int main() {
    int rows, cols;
    int matrix[100][100];

    printf("Enter rows and columns: ");
    scanf("%d %d", &rows, &cols);

    printf("Enter matrix elements:\n");
    for (int i = 0; i < rows; i++) {
        for (int j = 0; j < cols; j++) {
            scanf("%d", &matrix[i][j]);
        }
    }

    if (isIdentityMatrix(matrix, rows, cols)) {
        printf("The matrix is an identity matrix.\n");
    } else {
        printf("The matrix is not an identity matrix.\n");
    }

    return 0;
}

12 818

Symmetric Matrix Checker

#include <stdio.h>
#include <stdbool.h>

bool isSymmetric(int matrix[][100], int rows, int cols) {
    if (rows != cols) {
        return false;
    }
    for (int i = 0; i < rows; i++) {
        for (int j = 0; j < cols; j++) {
            if (matrix[i][j] != matrix[j][i]) {
                return false;
            }
        }
    }
    return true;
}

int main() {
    int rows, cols;
    int matrix[100][100];

    printf("Enter the number of rows: ");
    scanf("%d", &rows);
    printf("Enter the number of columns: ");
    scanf("%d", &cols);

    printf("Enter the matrix elements:\n");
    for (int i = 0; i < rows; i++) {
        for (int j = 0; j < cols; j++) {
            scanf("%d", &matrix[i][j]);
        }
    }

    if (isSymmetric(matrix, rows, cols)) {
        printf("The matrix is symmetric.\n");
    } else {
        printf("The matrix is not symmetric.\n");
    }

    return 0;
}